Department of Prosthodontics, School of Dentistry, Chosun University, Republic of Korea.
J Adv Prosthodont. 2013 Aug;5(3):248-55. doi: 10.4047/jap.2013.5.3.248. Epub 2013 Aug 31.
This study compared the effect of three intraoral repair systems on the bond strength between composite resin and zirconia core.
THIRTY ZIRCONIA SPECIMENS WERE DIVIDED INTO THREE GROUPS ACCORDING TO THE REPAIR METHOD: Group I- CoJet™ Repair System (3M ESPE) [chairside silica coating with 30 µm SiO2 + silanization + adhesive]; Group II- Ceramic Repair System (Ivoclar Vivadent) [etching with 37% phosphoric acid + Zirconia primer + adhesive]; Group III- Signum Zirconia Bond (Heraus) [Signum Zirconia Bond I + Signum Zirconia Bond II]. Composite resin was polymerized on each conditioned specimen. The shear bond strength was tested using a universal testing machine, and fracture sites were examined with FE-SEM. Surface morphology and wettability after surface treatments were examined additionally. The data of bond strengths were statistically analyzed with one-way ANOVA and Tamhane post hoc test (α=.05).
Increased surface roughness and the highest wettability value were observed in the CoJet sand treated specimens. The specimens treated with 37% phosphoric acid and Signum Zirconia Bond I did not show any improvement of surface irregularity, and the lowest wettability value were found in 37% phosphoric acid treated specimens. There was no significant difference in the bond strengths between Group I (7.80 ± 0.76 MPa) and III (8.98 ± 1.39 MPa). Group II (3.21 ± 0.78 MPa) showed a significant difference from other groups (P<.05).
The use of Intraoral silica coating system and the application of Signum Zirconia Bond are effective for increasing the bond strength of composite resin to zirconia.
本研究比较了三种口腔内修复系统对复合树脂与氧化锆核之间粘结强度的影响。
将 30 个氧化锆样本根据修复方法分为三组:组 I-CoJet™ 修复系统(3M ESPE)[椅旁二氧化硅涂层+30μmSiO2+硅烷化+黏结剂];组 II- Ceram Repair System(Ivoclar Vivadent)[磷酸处理+氧化锆底漆+黏结剂];组 III-Signum Zirconia Bond(Heraus)[Signum Zirconia Bond I+Signum Zirconia Bond II]。对每个处理后的样本进行复合树脂聚合。使用万能试验机测试剪切粘结强度,并通过 FE-SEM 观察断裂部位。另外还对表面处理后的表面形貌和润湿性进行了检查。使用单因素方差分析和 Tamhane 事后检验(α=.05)对粘结强度数据进行统计学分析。
经 CoJet 喷砂处理后的样本表面粗糙度增加,润湿性最高。用 37%磷酸和 Signum Zirconia Bond I 处理后的样本表面不规则性没有任何改善,且润湿性最低。组 I(7.80±0.76 MPa)和组 III(8.98±1.39 MPa)之间的粘结强度无显著差异。组 II(3.21±0.78 MPa)与其他组之间存在显著差异(P<.05)。
使用口腔内二氧化硅涂层系统和 Signum Zirconia Bond 的应用可以有效提高复合树脂与氧化锆的粘结强度。